US 2024/0197355 A1 · ULTRASONIC SURGICAL INSTRUMENT AND PROCESSING AND ASSEMBLING METHOD

Abstract

An ultrasonic surgical instrument has an easily assembled cannula assembly. The instrument includes an ultrasonic cutter bar for transmitting ultrasonic mechanical energy, wherein the cannula assembly is coaxially mounted around the ultrasonic cutter bar, and the cannula assembly is provided with the jaw at a distal end thereof and a handle assembly at a proximal end thereof. The cannula assembly has an integral structure and is connected to the handle assembly by means of a connecting mechanism. The integral cannula assembly can reduce assembly procedures, simplify a mounting structure, reduce complex structures, generally reduce the cost of manufacturing instruments, and reduce the wound on patients.

Claims16

Dependent claims

An ultrasonic surgical instrument, comprising a cutter bar, a jaw, a cannula assembly, and a handle assembly, wherein the cutter bar is an ultrasonic cutter bar configured to transmit ultrasonic energy;

the cannula assembly coaxially aligns with the cutter bar;
the jaw is arranged at a distal end part of the cannula assembly;
the handle assembly is arranged at a proximal end part of the cannula assembly;
the cannula assembly comprises an outer cannula assembly, an inner cannula assembly, and a thumb wheel outer ring;
the outer cannula assembly and the inner cannula assembly are both monolithic structures;
the cannula assembly is rotatably connected to the handle assembly;
the thumb wheel outer ring is coaxially mounted around the outer cannula assembly;
and the thumb wheel outer ring and the outer cannula assembly do not rotate relative to each other.

5 more elements

A processing and assembling method of an ultrasonic surgical instrument, wherein the ultrasonic surgical instrument comprises a cutter bar, a jaw, a cannula assembly, and a handle assembly, wherein the jaw and a distal end of the cutter bar form a clamping structure;

the cannula assembly comprises an outer cannula assembly, an inner cannula assembly, and a thumb wheel outer ring;
the processing and assembling method comprises:
assembling an outer cannula body and an outer cannula matrix into the outer cannula assembly by a coinjection molding process, a welding process, or a gluing process;
assembling an inner cannula body and an inner cannula matrix into the inner cannula assembly by a coinjection molding process, a welding process, or a gluing process;
coaxially mounting the outer cannula assembly and the inner cannula assembly to obtain the cannula assembly;
and
fitting the cannula assembly, the cutter bar, the jaw, and the handle assembly to obtain the ultrasonic surgical instrument, wherein the thumb wheel outer ring and the outer cannula assembly in the cannula assembly do not rotate relative to each other.

4 more elements

Dependencies are inferred from the claim text.

Ultrasonic surgical instrument and processing and assembling method

Life of this patent

Ultrasonic surgical instrument and processing and assembling method

Life of this patent

Abstract

Claims16